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Improvised teacher-made manipulatives used in teaching place value include beans and bean sticks, or single popsicle sticks and bundles of ten popsicle sticks. Virtual manipulatives for mathematics are computer models of these objects. Notable collections of virtual manipulatives include The National Library of Virtual Manipulatives and the ...
Caroline Pratt (May 13, 1867 – June 6, 1954 [1]) was an American social thinker and progressive educational reformer whose ideas were influential in educational reform, policy, and practice.
Unqualified, the term "presentation copy" always suggests a copy gifted by the author. [4] A dedication copy is a copy presented to the dedicatee. [5] They rank highly among presentation copies in collectors' estimations. An inscribed copy is not a presentation copy, but is signed by the author at the book owner's request. Presentation copies ...
A simple fraction (also known as a common fraction or vulgar fraction) [n 1] is a rational number written as a/b or , where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include 1 / 2 , − 8 / 5 , −8 / 5 , and 8 / −5 .
The photograph demonstrates the application of the rule of thirds. The horizon in the photograph is on the horizontal line dividing the lower third of the photo from the upper two-thirds. The tree is at the intersection of two lines, sometimes called a power point [1] or a crash point. [2]
The Cal 3 plan would divide the state's 58 counties among three states, tentatively named California (nicknamed Cal), Northern California (nicknamed NorCal), and Southern California (nicknamed SoCal). [15] [16] [17] In drawing these new boundaries, Draper aimed to have it so that the three proposed states have nearly equal populations. [14]
In cell biology, cell fractionation is the process used to separate cellular components while preserving individual functions of each component. [1] This is a method that was originally used to demonstrate the cellular location of various biochemical processes.
"A Class Divided" is a 1985 episode of the PBS series Frontline. Directed by William Peters, the episode profiles the Iowa schoolteacher Jane Elliott and her class of third graders, who took part in a class exercise about discrimination and prejudice in 1970 and reunited in the present day to recall the experience.
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